I need advise concerning one of my hens. It's a barred rock, hatched in November. She is just laying down looking sick. I had another hen doing the same thing two days ago but within a day she perked up and was back to pecking happily that same evening. This one not so. I noticed her looking I'll yesterday morning, and she's still not looking good. She will eat dried worms and I'm making her drink an electrolyte solution but she looks worse. She can get up but after a couple of steps she lays back down. I can't feel an egg and she's not coughing though today her beak is open and she's panting. She seems to have loose stools as she has poop on her vent feathers...What can I do? Thanks is advance for any advise!